ECS Container Instances

An ECS container instance is an EC2 instance that’s:

  • running Amazon’s ECS container agent and
  • has been registered into a cluster

Notes:

  • the container agent is automatically installed if you’re using an Amazon ECS-optimized AMI
  • the agent will make API calls to Amazon ECS so the instances will need an IAM role

 

For more on this see:

https://docs.aws.amazon.com/AmazonECS/latest/developerguide/ECS_instances.html

Note, however, if you’re using Fargate this does not apply (see docs).

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